研究了硼砂盐浴渗铬和氯系熔盐渗铬.It was investigated that chromizing in borax salt bath and melting hydrochloride.而且浇注温度越高, 铸渗铬合金层越厚.The higher casting temperature, the thicker castchromized alloy layer.研究了铸铁表面铸渗铬合金层形成过程.The forming pro...
氢气是一种无色 、 无味的气体.Hydrogen is a corlourless, odourless gas.她为他枯燥无味的生活带来了从未有过的乐趣。She had given him the only joy his arid life had ever known.一些文艺复光时期的弥撒的选节被不适当地加入到了格鲁克平淡无味的唐璜音乐中.Some excerpts from a Renaissance mass are spa...